Fix example in Chisel Type vs Scala Type article (#2655) (#2657)

(cherry picked from commit 0b2c211beefeefb72c86ea69a0b2a0101b2f2c20)

Co-authored-by: Megan Wachs <megan@sifive.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/docs/src/explanations/chisel-type-vs-scala-type.md b/docs/src/explanations/chisel-type-vs-scala-type.md
index 6c311a21..ead509d3 100644
--- a/docs/src/explanations/chisel-type-vs-scala-type.md
+++ b/docs/src/explanations/chisel-type-vs-scala-type.md
@@ -245,13 +245,13 @@ that you have more information than it can infer to convert Scala types:
 
 ```scala mdoc:silent
 class ScalaCastingModule(gen: () => Bundle) extends Module {
-  val io = gen().asInstanceOf[MyBundle]
+  val io = IO(Output(gen().asInstanceOf[MyBundle]))
   io.foo := 0.U
 }
 ```
 
 This works if we do indeed have more information than the compiler:
-``` scala mdoc:silent
+```scala mdoc:silent
 ChiselStage.elaborate(new ScalaCastingModule( () => new MyBundle(3)))
 ```